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Technical Data Sheet
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2256650 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 250.00 FAHRENHEIT DEGF, outside_diameter: 0.879 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-404-6091, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2256650
NSN: 5330-00-404-6091
FSC: 5330
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 250.00 FAHRENHEIT DEGF
outside_diameter0.879 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter0.877 INCHES MINIMUM AND 0.881 INCHES MAXIMUM IN
sealing_element_styleANGULAR
accommodated_shaft_diameter0.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-404-6091
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2256650 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SEAL WIDTH: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 0.877 INCHES MINIMUM AND 0.881 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
TEMP RATING: -65.0 FAHRENHEIT AND 250.00 FAHRENHEIT DEGF
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
•
SEALING ELEMENT STYLE: ANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
HOUSING BORE DIAMETER0.877 INCHES MINIMUM AND 0.881 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
TEMP RATING-65.0 FAHRENHEIT AND 250.00 FAHRENHEIT DEGF
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER0.500 INCHES NOMINAL IN
MATERIALSTEEL CASE
SEALING ELEMENT STYLEANGULAR
SURFACE TREATMENTPLASTIC CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
S60P29953-5375Interchangeable
interchangeable cross-reference
interchangeable
4940Interchangeable
interchangeable cross-reference
interchangeable
10180130Interchangeable
interchangeable cross-reference
interchangeable
9953206Interchangeable
interchangeable cross-reference
interchangeable
9711557Interchangeable
interchangeable cross-reference
interchangeable
B107.100Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2256650?
2256650 is a SEAL,PLAIN ENCASED.
What parts can replace 2256650?
There are 17 known substitutes for 2256650: S60P29953-5375, 4940, 10180130 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2256650?
2256650 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-404-6091. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026